Full Stack Engineer

- Location: Berlin, Germany (Hybrid) - Work Policy: : Hybrid; fully remote possible for exceptional candidates - Work Experience: +5 years experience - Language Requirement: English B2 - Employment Type: Full-time - Technical Skills Required: Full Stack Development, TypeScript, React Native, LLMs, API design, Electron - Industry: HealthTech/Software-as-a-Service (SaaS) - Positions Available: 1 Company Mission They relieve psychotherapists of administrative burdens through intelligent AI assistance, giving them more time for what matters most: working with patients and providing high-quality therapy. Core Values Empathy: They develop for people who help others. That's why they listen and build solutions that make everyday practice noticeably easier instead of complicating it. Trust: Trust is their foundation. They work uncompromisingly securely, transparently, and reliably—both with their data and within their team. Quality: They deliver professional precision instead of gimmicks. Their AI has to stand up to everyday therapeutic use, which is why they focus on technical excellence with real added value. Tasks - Own features end to end, by yourself – from the problem through architecture, implementation, release and the fixes that follow, frontend, backend and everything in between; nobody hands you a finished spec and nobody finishes your work for you - Make the technical decisions, from choosing a library to architecting a new feature, and defend the decision when it is questioned - Integrate AI into the product, working with our AI services to build dependable systems around probabilistic output - Build real-time features with WebSocket-based live capabilities where latency is visible to the user - Ship on desktop and mobile, working on our Electron app (main and renderer architecture, native OS integration, auto-update, offline-first behaviour) and React Native app - Iterate fast with continuous deployment and short cycles, ensuring design controls and traceable test evidence on the surfaces that fall under EU MDR - Take initiative creating tickets and implementing them end-to-end Requirements - Genuinely full-stack. Strong React and TypeScript on the front end, and real backend work behind it: API design, data modelling, relational databases, async and background processing. You have built and operated both halves of a feature, not consumed an API someone else wrote - You have shipped software that real users depend on, and you supported it afterwards. You know what breaks in production and why - Debugging strength across the whole stack. When something is wrong you find it rather than guess at it - Real autonomy. You identify what needs doing, decide, and ship. No standup is what keeps you moving - Empathy for the people who use what you build. Our users are therapists under time pressure, and you are curious enough about their work to build something they actually love - Clear written English and comfort working async - React, TypeScript, API design - Data modelling - Relational databases - Async processing - Debugging - LLM application engineering: evaluation, prompt pipelines, agent tooling, latency and cost optimisation - Electron or another desktop platform, including distribution, code signing and auto-update - React Native, and experience publishing to the App Store and Play Store - Audio processing, transcription or other real-time media - Healthcare, GDPR-heavy or other regulated environments - German. Our users, their documents and our support conversations are in German - Excellence and Drive are required. But typically > 5 years - Strong autonomy, very ambitious and driven, curious about the domain Benefits - High degree of creative freedom: End-to-end responsibility for features and architectural decisions in direct collaboration with the CTO and founders. - Broad technical scope ranging from React/TypeScript to Electron & React Native to LLM integration with real-time WebSocket functionality. - Practical AI engineering tasks in production systems rather than demo projects, including cost and latency optimization in compliance with the EU MDR. - Tangible social impact: The software frees up hours each week for therapists, thereby improving psychotherapeutic care. - A dynamic, fast-growing scale-up that is already the market leader in the DACH region and is pursuing ambitious product roadmaps. - An attractive package including a copetitive salary, a substantial equity stake, 28 days of vacation, and a flexible hybrid or remote work setup in Berlin-Mitte. Why Work WIth Them - Own entire features in a bootstrapped, market-leading HealthTech scale-up—no layers, direct CTO access. - Ship real AI solutions that save therapists hours weekly—your code impacts mental-health care immediately. - Competitive salary plus meaningful equity; high autonomy to choose tools & architecture. - Hybrid Berlin or remote for exceptional engineers; flexible hours & latest equipment. Find Jobs in Germany on Arbeitnow